private void GetBlockAfterMerge(List <Line2D> orderAddedLines, List <Rectangle2D> minimumRectangles, List <Line2D> leftLines)
{
List <Line2D> remainLines = new List <Line2D>();
Merge(orderAddedLines, minimumRectangles, leftLines);
remainLines.AddRange(leftLines);
GraphicAlgorithm.MergeLine(leftLines);
GraphicAlgorithm.OrderLinesByLength(leftLines);
if (remainLines.Count != leftLines.Count)
{
orderAddedLines = new List <Line2D>(leftLines);
GetBlockAfterMerge(orderAddedLines, minimumRectangles, leftLines);
}
}